Resources.LoadAll() error in WebGL

I'm trying to load resources at game load in WebGL with the following code:

 Debug.Log("RESOURCE LOOKUP A1");
 Resources.LoadAll("", typeof(ResourceLookup));
 Debug.Log("RESOURCE LOOKUP A2");
 ResourceLookup[] resources = Resources.FindObjectsOfTypeAll<ResourceLookup>();
 Debug.Log(resources.Length);

T$$anonymous$$s is the result in both Firefox and Chrome

The 1 object detected is a newly created GameObject prefab in the resources folder with only the ResourceLookup component attached. Deleting t$$anonymous$$s object from the project will still produce the same output, with the exception of the last Debug.Log(resources.Length) being 0 instead of 1.

I tried loading other types as well, and it seems to always happen to the first Resources.LoadAll and not to subsequent calls.

I checked my entire assets folder and scene for missing script references both manually and through script http://wiki.unity3d.com/index.php/FindMissingScripts and none was missing. I haven't deleted anyt$$anonymous$$ng recently anyway as far as I am aware.